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B/wds/wds The Washington Visual Double Star Catalog (Mason+ 2001-2014)
The Washington Double Star Catalog (main part) (150551 rows)
  recno=124773
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ColumnValue  Explain   (UCD)
_RAJ200020 09 58.1300 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+12 15 45.000 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195020 07 36.5378 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+12 06 50.959 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon053.1375654 deg Galactic longitude at Epoch=J2000, proper motions taken into account (pos.galactic.lon)
_Glat-11.2656146 deg Galactic latitude at Epoch=J2000, proper motions taken into account (pos.galactic.lat)
124773recno 124773  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

WDS20100+1216  (i) WDS name (based on J2000 position) (meta.id;meta.main)
DiscBPM2038  Discoverer Code (1 to 4 letters) and Number (Note 5)   (meta.id)
Comp   Components when more than 2 (Note 1)   (meta.code.multip)
Obs11977 yr Date of first satisfactory observation (time.epoch)
Obs22015 yr Date of last satisfactory observation (time.epoch)
Nobs 8  Number of Observations (up to 9999) (meta.number)
pa1218 deg Position Angle at date Obs1 (Note 2)   (pos.posAng)
pa2218 deg Position Angle at date Obs2 (Note 2)   (pos.posAng)
sep1 50.3 arcsec Separation at date Obs1 (pos.angDistance;src.orbital)
sep2 50.30 arcsec Separation at date Obs12 (pos.angDistance;src.orbital)
mag113.16 mag Magnitude of First Component (phot.mag;em.opt)
mag214.11 mag Magnitude of Second Component (phot.mag;em.opt)
SpType   Spectral Type (Primary/Secondary) (src.spType)
pmRA1 7 mas/yr Primary Proper Motion (RA) (pos.pm;pos.eq.ra)
pmDE1 0 mas/yr Primary Proper Motion (Dec) (pos.pm;pos.eq.dec)
pmRA2 -5 mas/yr Secondary Proper Motion (RA) (pos.pm;pos.eq.ra)
pmDE2 9 mas/yr Secondary Proper Motion (Dec) (pos.pm;pos.eq.dec)
DM   Durchmusterung Number (Note 3)   (meta.id)
NotesNV   [B-Z ] Notes about the binary (Note 4)   (meta.note)
n_RAJ2000    [!P] indicates a position derived from WDS name (meta.note)
RAJ200020 09 58.13 "h:m:s" (i) Right Ascension J2000 (Ep=J2000, hours) (pos.eq.ra;meta.main)
DEJ2000+12 15 45.0 "d:m:s" (i) Declination J2000 (Ep=J2000, degrees) (pos.eq.dec;meta.main)
  
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